Presentation on theme: "Bellringer for Thursday, August 22nd"— Presentation transcript:
1 Bellringer for Thursday, August 22nd Solve this problem in your notes:Ling’s Hallway is 10 feet long and 4 feet wide. He paid $200 to tile his hallway floor. How much did Ling pay per square foot for the tile?
2 Review Lesson 1 (Lesson 0-1) Plan for Problem Solving
3 What steps did you take in solving the bellringer?
4 Four-Step Problem-Solving Plan Understand the problemPlan the solutionSolve the ProblemCheck the Solution
5 1. Understand the Problem Read the problem carefully and explore what the problem is aboutIdentify what information is given. (Underline)Identify what you need to find. (Circle)Ling’s Hallway is 10 feet long and 4 feet wide. He paid $200 to tile his hallway floor. How much did Ling pay per square foot for the tile?
6 2. Plan the Solution Write an equation Chose a variable to represent one of the unspecified numbers in the problemThis is called defining a variableEx: times the cost per square foot equalsx f =Ling’s Hallway is 10 feet long and 4 feet wide. He paid $200 to tile his hallway floor. How much did Ling pay per square foot for the tile?
7 3. Solve the ProblemUse the strategy you chose in Step 2 to solve the problem.Ex: 40 x f = 200“What number times 40 is 200?”f = 5The tile cost $5 per square foot
8 4. Check the Solution Does your answer make sense? Estimate to see if you got an answer that is closeDoes it fit the information in the problem?Ex: If the tile costs $5 per square foot, then 40 square feet of tile costs 5 x 40 or $200. The answer makes sense.
9 Example #2Emily’s family drove miles. Their car used 19 gallons of gasoline. Describe the car’s gas mileage. Understand: Given- Asked- Plan: Solve: Check:
10 Example #3While on vacation, the Jacobson family drove miles the first day, miles the second day, and 209 miles the third day. About how many miles did they travel in all?Understand:Given-Asked-Plan:Solve:Check:
15 Classify these numbers Name the set or sets of numbers to which each real number belongs.Ex: 4Natural Whole IntegerEx: -5Natural Whole IntegerEx: 0Natural Whole Integer
16 Rational NumbersNumbers that can be expressed in the form a/b, where a and b are both integers and b does not equal 0Square root: one of two equal factors of a numberEx: 64Perfect Square: the square roots are rational numbers
17 Irrational NumbersNumbers that cannot be expressed as terminating or repeating decimalsEx: …..Think of another example of an irrational number